For a first time pistol owner, I would have to recommend the H&K out of those choices. The Kimber 1911's are pretty nice as well, but a 1911 may not be the best pistol for a first-time pistolero. Carrying cocked and locked (the best method for 1911's) should be a practice left to experienced pistol shooters. The H&K's are nice, reliable and accurate pistols.
Let me also highly recommend two other guns you don't list: The various Glock models as well as the products from Sig-Sauer. They are hard to beat for quality, reliability and ease of use. The Sig's also usually have outstanding accuracy.
And one final recommendation, and the one I usually make to all new pistol shooters.....the tried and true revolver. You would not be one bit out-gunned if you were packing a nice Smith and Wesson .357 Magnum with a good load like the Federal Classic 125 gr JHP "manstopper" that has given the .357 such a rep over the years. They are easy to operate, accurate, not so picky about cleaning and safe. If concealed carry is what you want, a Model 66 with a 2.5" barrel or pehaps a 686 with 3" barrel might be the way to go. If carrying the iron on your hip, then stay with the 4" barrel models. Can't go wrong with a good .357 and a couple of speedloaders from Safariland or HKS to back it up. A Smith and Wesson 686 with 4" barrel is what I usually wear on my hip anymore. I love mine.
And oh yeah........welcome to the world of handguns! Good luck in your search.
---Charging Handle